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HIGH · 7.6

CVE-2026-2476

Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported confi...

Vulnerability Description

Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported configuration data. Mattermost Advisory ID: MMSA-2026-00606

CVSS Score

7.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
MattermostMs Teams< 2.3.1

Related Weaknesses (CWE)

CWE-200

References

FAQ

What is CVE-2026-2476?

CVE-2026-2476 is a vulnerability with a CVSS score of 7.6 (HIGH). Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported confi...

How severe is CVE-2026-2476?

CVE-2026-2476 has been rated HIGH with a CVSS base score of 7.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-2476?

Check the references section above for vendor advisories and patch information. Affected products include: Mattermost Ms Teams.